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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /sysdeps/generic/signame.c
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initial import
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diff --git a/sysdeps/generic/signame.c b/sysdeps/generic/signame.c
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+/* Convert between signal names and numbers.
+ Copyright (C) 1990, 1992, 1993 Free Software Foundation, Inc.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; see the file COPYING. If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include <stdio.h>
+#include <sys/types.h> /* Some systems need this for <signal.h>. */
+#include <signal.h>
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+/* Some systems do not define NSIG in <signal.h>. */
+#ifndef NSIG
+#ifdef _NSIG
+#define NSIG _NSIG
+#else
+#define NSIG 32
+#endif
+#endif
+
+#if !__STDC__
+#define const
+#endif
+
+#include "signame.h"
+
+#ifndef HAVE_SYS_SIGLIST
+/* There is too much variation in Sys V signal numbers and names, so
+ we must initialize them at runtime. */
+
+static const char undoc[] = "unknown signal";
+
+const char *sys_siglist[NSIG];
+
+#else /* HAVE_SYS_SIGLIST. */
+
+#ifndef SYS_SIGLIST_DECLARED
+extern char *sys_siglist[];
+#endif /* Not SYS_SIGLIST_DECLARED. */
+
+#endif /* Not HAVE_SYS_SIGLIST. */
+
+/* Table of abbreviations for signals. Note: A given number can
+ appear more than once with different abbreviations. */
+typedef struct
+ {
+ int number;
+ const char *abbrev;
+ } num_abbrev;
+static num_abbrev sig_table[NSIG*2];
+/* Number of elements of sig_table used. */
+static int sig_table_nelts = 0;
+
+/* Enter signal number NUMBER into the tables with ABBREV and NAME. */
+
+static void
+init_sig (number, abbrev, name)
+ int number;
+ const char *abbrev;
+ const char *name;
+{
+#ifndef HAVE_SYS_SIGLIST
+ sys_siglist[number] = name;
+#endif
+ sig_table[sig_table_nelts].number = number;
+ sig_table[sig_table_nelts++].abbrev = abbrev;
+}
+
+void
+signame_init ()
+{
+#ifndef HAVE_SYS_SIGLIST
+ int i;
+ /* Initialize signal names. */
+ for (i = 0; i < NSIG; i++)
+ sys_siglist[i] = undoc;
+#endif /* !HAVE_SYS_SIGLIST */
+
+ /* Initialize signal names. */
+#if defined (SIGHUP)
+ init_sig (SIGHUP, "HUP", "Hangup");
+#endif
+#if defined (SIGINT)
+ init_sig (SIGINT, "INT", "Interrupt");
+#endif
+#if defined (SIGQUIT)
+ init_sig (SIGQUIT, "QUIT", "Quit");
+#endif
+#if defined (SIGILL)
+ init_sig (SIGILL, "ILL", "Illegal Instruction");
+#endif
+#if defined (SIGTRAP)
+ init_sig (SIGTRAP, "TRAP", "Trace/breakpoint trap");
+#endif
+ /* If SIGIOT == SIGABRT, we want to print it as SIGABRT because
+ SIGABRT is in ANSI and POSIX.1 and SIGIOT isn't. */
+#if defined (SIGABRT)
+ init_sig (SIGABRT, "ABRT", "Aborted");
+#endif
+#if defined (SIGIOT)
+ init_sig (SIGIOT, "IOT", "IOT trap");
+#endif
+#if defined (SIGEMT)
+ init_sig (SIGEMT, "EMT", "EMT trap");
+#endif
+#if defined (SIGFPE)
+ init_sig (SIGFPE, "FPE", "Floating point exception");
+#endif
+#if defined (SIGKILL)
+ init_sig (SIGKILL, "KILL", "Killed");
+#endif
+#if defined (SIGBUS)
+ init_sig (SIGBUS, "BUS", "Bus error");
+#endif
+#if defined (SIGSEGV)
+ init_sig (SIGSEGV, "SEGV", "Segmentation fault");
+#endif
+#if defined (SIGSYS)
+ init_sig (SIGSYS, "SYS", "Bad system call");
+#endif
+#if defined (SIGPIPE)
+ init_sig (SIGPIPE, "PIPE", "Broken pipe");
+#endif
+#if defined (SIGALRM)
+ init_sig (SIGALRM, "ALRM", "Alarm clock");
+#endif
+#if defined (SIGTERM)
+ init_sig (SIGTERM, "TERM", "Terminated");
+#endif
+#if defined (SIGUSR1)
+ init_sig (SIGUSR1, "USR1", "User defined signal 1");
+#endif
+#if defined (SIGUSR2)
+ init_sig (SIGUSR2, "USR2", "User defined signal 2");
+#endif
+ /* If SIGCLD == SIGCHLD, we want to print it as SIGCHLD because that
+ is what is in POSIX.1. */
+#if defined (SIGCHLD)
+ init_sig (SIGCHLD, "CHLD", "Child exited");
+#endif
+#if defined (SIGCLD)
+ init_sig (SIGCLD, "CLD", "Child exited");
+#endif
+#if defined (SIGPWR)
+ init_sig (SIGPWR, "PWR", "Power failure");
+#endif
+#if defined (SIGTSTP)
+ init_sig (SIGTSTP, "TSTP", "Stopped");
+#endif
+#if defined (SIGTTIN)
+ init_sig (SIGTTIN, "TTIN", "Stopped (tty input)");
+#endif
+#if defined (SIGTTOU)
+ init_sig (SIGTTOU, "TTOU", "Stopped (tty output)");
+#endif
+#if defined (SIGSTOP)
+ init_sig (SIGSTOP, "STOP", "Stopped (signal)");
+#endif
+#if defined (SIGXCPU)
+ init_sig (SIGXCPU, "XCPU", "CPU time limit exceeded");
+#endif
+#if defined (SIGXFSZ)
+ init_sig (SIGXFSZ, "XFSZ", "File size limit exceeded");
+#endif
+#if defined (SIGVTALRM)
+ init_sig (SIGVTALRM, "VTALRM", "Virtual timer expired");
+#endif
+#if defined (SIGPROF)
+ init_sig (SIGPROF, "PROF", "Profiling timer expired");
+#endif
+#if defined (SIGWINCH)
+ /* "Window size changed" might be more accurate, but even if that
+ is all that it means now, perhaps in the future it will be
+ extended to cover other kinds of window changes. */
+ init_sig (SIGWINCH, "WINCH", "Window changed");
+#endif
+#if defined (SIGCONT)
+ init_sig (SIGCONT, "CONT", "Continued");
+#endif
+#if defined (SIGURG)
+ init_sig (SIGURG, "URG", "Urgent I/O condition");
+#endif
+#if defined (SIGIO)
+ /* "I/O pending" has also been suggested. A disadvantage is
+ that signal only happens when the process has
+ asked for it, not everytime I/O is pending. Another disadvantage
+ is the confusion from giving it a different name than under Unix. */
+ init_sig (SIGIO, "IO", "I/O possible");
+#endif
+#if defined (SIGWIND)
+ init_sig (SIGWIND, "WIND", "SIGWIND");
+#endif
+#if defined (SIGPHONE)
+ init_sig (SIGPHONE, "PHONE", "SIGPHONE");
+#endif
+#if defined (SIGPOLL)
+ init_sig (SIGPOLL, "POLL", "I/O possible");
+#endif
+#if defined (SIGLOST)
+ init_sig (SIGLOST, "LOST", "Resource lost");
+#endif
+#if defined (SIGDANGER)
+ init_sig (SIGDANGER, "DANGER", "Danger signal");
+#endif
+}
+
+/* Return the abbreviation for signal NUMBER. */
+
+char *
+sig_abbrev (number)
+ int number;
+{
+ int i;
+
+ if (sig_table_nelts == 0)
+ signame_init ();
+
+ for (i = 0; i < sig_table_nelts; i++)
+ if (sig_table[i].number == number)
+ return (char *)sig_table[i].abbrev;
+ return NULL;
+}
+
+/* Return the signal number for an ABBREV, or -1 if there is no
+ signal by that name. */
+
+int
+sig_number (abbrev)
+ const char *abbrev;
+{
+ int i;
+
+ if (sig_table_nelts == 0)
+ signame_init ();
+
+ /* Skip over "SIG" if present. */
+ if (abbrev[0] == 'S' && abbrev[1] == 'I' && abbrev[2] == 'G')
+ abbrev += 3;
+
+ for (i = 0; i < sig_table_nelts; i++)
+ if (abbrev[0] == sig_table[i].abbrev[0]
+ && strcmp (abbrev, sig_table[i].abbrev) == 0)
+ return sig_table[i].number;
+ return -1;
+}
+
+#ifndef HAVE_PSIGNAL
+/* Print to standard error the name of SIGNAL, preceded by MESSAGE and
+ a colon, and followed by a newline. */
+
+void
+psignal (signal, message)
+ int signal;
+ const char *message;
+{
+ if (signal <= 0 || signal >= NSIG)
+ fprintf (stderr, "%s: unknown signal", message);
+ else
+ fprintf (stderr, "%s: %s\n", message, sys_siglist[signal]);
+}
+#endif